摘要:
A dosing system to dispense a predetermined quantity of a fluid medium comprises a digital signal processor control having an interface to emit a start signal and a stop signal and an interface to measure a sensor signal. A dispenser is provided that is triggered by the start signal and the stop signal and, in the interval between the two signals, dispenses a specific quantity of fluid, as well as a sensor unit which, triggered by the start signal, continuously measures the flow rate of the fluid fed to the dispenser and emits a sensor signal as a function of this flow rate. The digital signal processor control measures the sensor signal, determines the quantity of fluid dispensed by the dispenser from this signal and sends a stop signal to the dispenser when the quantity of fluid dispensed by the dispenser corresponds to the predetermined quantity of fluid.
摘要:
The invention relates to a dosing system to dispense a predetermined quantity of a fluid medium which comprises a digital signal processor control having an interface to emit a start signal and a stop signal and an interface to measure a sensor signal. A dispenser is provided that is triggered by the start signal and the stop signal and, in the interval between the two signals, dispenses a specific quantity of fluid, as well as a sensor unit which, triggered by the start signal, continuously measures the flow rate of the fluid fed to the dispenser and emits a sensor signal as a function of this flow rate. The digital signal processor control measures the sensor signal, determines the quantity of fluid dispensed by the dispenser from this signal and sends a stop signal to the dispenser when the quantity of fluid dispensed by the dispenser corresponds to the predetermined quantity of fluid. A procedure for the dosage of a predetermined quantity of a fluid medium is described in which the quantity dispensed by a dispenser is continuously measured by the digital signal processor control during the dosing process with the aid of a flow rate sensor, the dosing process not being terminated until the predetermined amount of fluid has been delivered.
摘要:
A thermal, flow measuring device and method for measuring the flow of a measured medium. During a heating phase of predetermined length a constant heating current of a first electrical current source flows through a first resistor. During a first measuring phase of predetermined length a constant measurement current of a second electrical current source flows through the first resistor. During the first measuring phase a first voltage falls across the first resistor, wherein during a second measuring phase of predetermined length during the first measuring cycle the constant measurement current of the second electrical current source flows through a second resistor. During the second measuring phase a second voltage falls across the second resistor, wherein during the heating phase the constant heating current of the first electrical current source flows through a shunt resistor, wherein during the heating phase a fifth voltage falls across the shunt resistor, wherein at least the first voltage, the second voltage and the fifth voltage are utilized for calculating the flow and wherein during the first measuring phase the constant heating current of the first electrical current source flows through a bypass resistor.
摘要:
A thermal, flow measuring device and method for measuring the flow of a measured medium. During a heating phase of predetermined length a constant heating current of a first electrical current source flows through a first resistor. During a first measuring phase of predetermined length a constant measurement current of a second electrical current source flows through the first resistor. During the first measuring phase a first voltage falls across the first resistor, wherein during a second measuring phase of predetermined length during the first measuring cycle the constant measurement current of the second electrical current source flows through a second resistor. During the second measuring phase a second voltage falls across the second resistor, wherein during the heating phase the constant heating current of the first electrical current source flows through a shunt resistor, wherein during the heating phase a fifth voltage falls across the shunt resistor, wherein at least the first voltage, the second voltage and the fifth voltage are utilized for calculating the flow and wherein during the first measuring phase the constant heating current of the first electrical current source flows through a bypass resistor.
摘要:
The invention relates to a method to determine the volume of small, spherical moving objects in which the objects move through the optical path of a photo electric sensor that comprises at least one light beam transmitter and one light beam receiver, and the change in the light intensity at the light beam receiver caused by objects passing through the optical path is registered and converted into an electrical measurement signal by means of an evaluation unit.The invention is distinguished by the fact that before a measurement process, the amplitude of the electric measurement signal is calibrated to a previously determined average standard volume of the objects and during the measurement process, the volume of each measured object is determined using the change in amplitude of the measurement signal.
摘要:
The present invention relates to a gas lock for separating two gas chambers, which while taking up minimal space makes it possible to achieve the separation of gases without contact with the product/educt/transporting system. The gas lock according to the invention is distinguished by the integration of a measuring chamber for measuring at least one physical and/or chemical property. Also, the present invention relates to a coating device which comprises a gas lock according to the invention. Also provided are possibilities for using the gas lock according to the invention.
摘要:
The invention relates to a retaining device for substrates to be coated, which device comprises a contact surface for the substrate to be coated. The retaining device is for example configured as a plate on which the substrate rests and which has one or more apertures, e.g. drilled holes, grooves etc. has, through which a pressure gradient can be set between the face of the substrate and the opposite face of the retaining device. In this way a temporary fixing of the substrate by suction onto the retaining device is possible. The invention also relates to a method for coating a substrate which uses the retaining device according to the invention.
摘要:
The present invention relates to a detector for measuring characteristics of an energetic particle beam generated by a radiation source, the detector including means to vary the incoming particle beam energy; a plurality of sensors arranged in parallel; and processing means capable of processing signals coming from said sensors in correlation with said energy variation.
摘要:
The invention relates to a device to detect individual moving objects having very small dimensions. The device according to the invention comprises a photo electric sensor having at least one light beam transmitter and one light beam receiver, the objects that are to be measured moving through the optical path of the photo electric sensor, a first bundle of optical waveguides whose inputs are connected to the light beam transmitter and whose outputs are arranged in a row alongside each other, the light beams emitted by the outputs forming the optical path of the photo electric sensor, a second bundle of optical waveguides which are arranged in a row alongside each other whose inputs pick up the light beams emitted by the first bundle of optical waveguides and whose outputs are connected to the light beam receiver, and an evaluation unit which is coupled to the light beam transmitter and the light beam receiver and which registers a change in the received light intensity of the photo electric sensor produced by the objects passing through the optical path.
摘要:
The present invention relates to a gas lock for separating two gas chambers, which while taking up minimal space makes it possible to achieve the separation of gases without contact with the product/educt/transporting system. The gas lock according to the invention is distinguished in that at least one means for manipulation of the flow is present in a flow passage of the gas lock. Also, the present invention relates to a coating device which comprises a gas lock according to the invention. Also provided are possibilities for using the gas lock according to the invention.